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An approximation of eigenvalue distribution in I.I.D MIMO channels under rayleigh fading

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3 Author(s)
Taniguchi, T. ; Dept. of Electron. Eng., Electro-Commun. Univ., Tokyo ; Sha, S. ; Karasawa

In multiple input multiple output (MIMO) communication systems, eigenvalues of channel correlation matrices play an essential role for the performance analysis, and particularly, the investigation about their behavior under time-variant environment ruled by a certain statistics is an important problem. This paper presents an approximation formula of the marginal distribution of all the eigenvalues of MIMO correlation matrices under i.i.d. (independent and identically distributed) Rayleigh fading environment. We will show that the theory of SIMO space diversity using maximal ratio combining (MRC) is applicable to the approximation of statistical distributions of all eigenvalues in MIMO systems with same number of diversity branches. The derived approximation has a monomial form suitable for the calculation of various performance indeces used in MIMO systems. Through computer simulations, the effectiveness of the proposed method is demonstrated

Published in:

Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on

Date of Conference:

17-20 July 2005